. >> reporter: just after 3:00 yesterday afternoon the coast guard here and in los angeles received a may day call. someone was in trouble. the san francisco crew was the fist to arrive and able to make a dramatic rescue before their plane sank. the coast guard provided ktvu with this video of the two people clutched from their down cessna like plane. it made an emergency landing mt. waters off the coast after having engine trouble. >> we grabbed the older gentleman which is in his 70s and we recovered the second gentleman which is in his 30s. both these guys were a father and son duo that do this trip often go up the coast toward canada. >> reporter: now the older man was suffering from hyperthermia. both victims were okay. how did crews locate the plane so quickly? it's something every pilot should have. coming up we'll tell you what it was and how if they didn't have they may not have survived. >>> 7-eleven employee killed inside the store and the give upman is still on -- and the gunman is still on the loose. the store clerk was pronounced dead at the scene. his name has not been